+ Fatigue Time T1 = Average time to produce one unit during the first hour of work. T2=Average time to produce one unit during the last hour of work. Fatigue Factor Ratio = [(T2-T1)/T1] x 0.5 T1 = T2= Fatigue Factor Ratio = Fatigue Factor Percent = Delay Time (Add more rows to table as necessary) Activity Total Time Per Day Time Average Time per Part (Add more rows to table as necessary) Number of Parts Total = Time Total = == Average Time per Part = Total Time / Total Number of Parts Average Time per Part = Decision Summary of all P, F, and D Factors and Proof